If I told my family I loved them, and they actually responded back with "I love you too", I'd think something was wrong.
Here are the responses I got from my family after I texted them, "Love you".
Sister: "Why are you saying that? haha"
(does there have to be a reason!? ha)
Dad: "Are you watching the news?"
(he completely ignored what I said)
(because apparently "Love you too" would take too long to type back? I just don't know...)
And there it is...ha!